Header video on mobile

Hi all, I'm using the Fotografie Blog Pro theme on a website, but it seems that the header video, only displays on desktop browsers. Is there a way to make the video display on mobile as well? I've tried multiple browsers, Firefox, Chrome and Opera on Android 9, and they all hide the header video, even if you select 'Request desktop site' within the browser. Is this a browser compatibility issue, or do we need to tweak a few settings within the theme to make this work? Thanks in advance!